Unit 4.1

Question 1

Auditory scene analysis

Answer 1

Ability to perceive an auditory signal as coming from a distinct set of sources
- segregate sounds that belong to different parts
- integrate sounds that belong to the same part

Question 2

Gestalt grouping principles (4)

Answer 2

1. good continuation: two con’t sound sources that back off eachother
2. closure: fill in missing pieces that make sense to us in tones
3. proximity: how similar the freq. are (if close we group them together)
4. similarity: timbre (if they sound the same we will group them as coming from the same source)

Question 3

What gestalt principle does the scale illusion use?

Answer 3

proximity

Question 4

Stream segregation - timing

Answer 4

• loss of rhythmic info
• repetition

Question 5

Stream segregation - pitch height

Answer 5

• loss of rhythmic info
• ie. slower speed hear groups of 3, faster speed we hear continuous notes

Question 6

Stream segregation - repetition

Answer 6

• repetition
• with fewer repetitions we hear the groups
• with more repetitions the groups cannot be distinguished